First section of Posey Tube (automobile tunnel) between Oakland and Alameda, California floated into place.Oakland Tribune �Camera News� newsreel . Old-fashioned silent movie title card �4500 tons of concrete afloat in Bay! First 210 foot section of Estuary Tube leaves Hunters Point for Oakland�; second title card �A bulkhead is placed at each end of the section�; title card �A strange craft, indeed towed by three tug-boats�. 1920s.14:39:36:12 Strange shot of steamer passing Webster St. Bridge in San Francisco or Alameda; boats disappears to show enormous concrete piece of estuary tube passing Webster�s St. Bridge.
December 7, 2015 Subject:
Don't mind the water in your car...
The completion of an underground and underwater auto tunnel is showcased here. Construction in the olden days as they haul tunnel pieces through the water. It works though! Nice ingenius engineering there.